<template>
	<view class="u-wrap">
		<cu-custom bgColor="bg-gradual-blue" :isBack="false">
			<block slot="content">书签</block>
		</cu-custom>
		
		<view v-if="false" class="u-search-box">
			<!-- <view class="u-search-inner">
				<u-icon name="search" color="#909399" :size="28"></u-icon>
				<text class="u-search-text">搜索</text>
			</view> -->
			<tm-input class="round-10" prefixp-icon="icon-search" :vertical="true" placeholder="搜索"></tm-input>
		</view>
		
		<view class="u-menu-wrap">
			<!-- 分类 -->
			<scroll-view scroll-y scroll-with-animation class="u-tab-view menu-scroll-view" :scroll-top="scrollTop">
				<view v-for="(item, index) in navLinks" :key="index" class="u-tab-item" :class="[current==index ? 'u-tab-item-active' : '']"
				 :data-current="index" @tap.stop="switchMenu(item, index)">
					<text class="u-line-1">{{item.cateName}}</text>
				</view>
			</scroll-view>
			
			<!-- 书签 -->
			<block v-for="(cate, index) in navLinks" :key="index">
				<scroll-view scroll-y class="right-box" v-if="current == index">
					<view class="page-view">
						<view class="class-item">
							<view class="item-title">
								<text>{{ cate.cateName }}</text>
							</view>
							<view class="item-container">
								<view class="thumb-box" v-for="link in cate.links" :key="link.id"  @click="openNavUrl(link.navUrl)">
									<image v-if="link.navLogo" class="item-menu-image" :src="link.navLogo" mode=""></image>
									<image v-else class="item-menu-image" src="@/static/logo/76x76.png"></image>
									<view class="item-menu-name margin-top-sm">{{link.navName}}</view>
								</view>
							</view>
						</view>
					</view>
				</scroll-view>
			</block>
		</view>
	</view>
</template>

<!-- 导航链接 -->
<script>
	import classifyData from "@/common/classify.data.js";
	import { getNavCateCache, getNavLinkCache } from "@/api/navLink/navLink.js";
	
	export default {
		data() {
			return {
				tabbar: classifyData,
				scrollTop: 0, //tab标题的滚动条位置
				current: 0, // 预设当前项的值
				menuHeight: 0, // 左边菜单的高度
				menuItemHeight: 0, // 左边菜单item的高度
				navCate: [],
				navLink: [],
				navLinks: []
			}
		},
		computed: {
		},
		mounted() {
			// this.getNavCates()
			// this.getNavLinks()
			this.buildNavLink();
		},
		methods: {
			async buildNavLink() {
				let cates = await this.getNavCates();
				let links = await this.getNavLinks();
				if (cates && links) {
					for (let cate of cates) {
						cate.links = links[cate.cateType]
					}
				}
				this.navLinks = cates;
			},
			async getNavCates() {
				let data = await getNavCateCache().then((res) => {
					if (res.data) {
						// navStore.setNavLinkType(data.data)
						// this.navCate = data.data;
						// this.navCate = res.data.filter(item => { // 过滤
						// 	return item.cateType !== 'quick' && item.cateType !== 'tools'
						// })
						// this.cateType = this.navCate[0].cateType;
						return res.data;
					} else {
						// navStore.setNavLinkType([])
					}
				})
				return data;
			},
			async getNavLinks() {
				let data = await getNavLinkCache().then((res) => {
					if (res.code == 200) {
						return res.data;
					}
				})
				return data;
			},
			getImg() {
				return Math.floor(Math.random() * 35);
			},
			// 点击左边的栏目切换
			async switchMenu(item, index) {
				if(index == this.current) return ;
				this.current = index;
				// 如果为0，意味着尚未初始化
				if(this.menuHeight == 0 || this.menuItemHeight == 0) {
					await this.getElRect('menu-scroll-view', 'menuHeight');
					await this.getElRect('u-tab-item', 'menuItemHeight');
				}
				// 将菜单菜单活动item垂直居中
				this.scrollTop = index * this.menuItemHeight + this.menuItemHeight / 2 - this.menuHeight / 2;
			},
			openNavUrl(url) {
				// #ifdef APP
				plus.runtime.openURL(url);
				// #endif
				// #ifdef H5
				window.open(url);
				// #endif
			},
			// 获取一个目标元素的高度
			getElRect(elClass, dataVal) {
				new Promise((resolve, reject) => {
					const query = uni.createSelectorQuery().in(this);
					query.select('.' + elClass).fields({size: true},res => {
						// 如果节点尚未生成，res值为null，循环调用执行
						if(!res) {
							setTimeout(() => {
								this.getElRect(elClass);
							}, 10);
							return ;
						}
						this[dataVal] = res.height;
					}).exec();
				})
			}
		}
	}
</script>

<style lang="scss" scoped>
	.u-wrap {
		height: calc(100vh);
		/* #ifdef H5 */
		height: calc(100vh - var(--window-top));
		/* #endif */
		display: flex;
		flex-direction: column;
	}

	.u-search-box {
		padding: 18rpx 30rpx;
	}

	.u-menu-wrap {
		flex: 1;
		display: flex;
		overflow: hidden;
	}
	
	.u-search-inner {
		background-color: rgb(234, 234, 234);
		border-radius: 100rpx;
		display: flex;
		align-items: center;
		padding: 10rpx 16rpx;
	}

	.u-search-text {
		font-size: 26rpx;
		color: $u-tips-color;
		margin-left: 10rpx;
	}

	.u-tab-view {
		width: 200rpx;
		height: 100%;
	}

	.u-tab-item {
		height: 110rpx;
		background: #f6f6f6;
		box-sizing: border-box;
		display: flex;
		align-items: center;
		justify-content: center;
		font-size: 26rpx;
		color: #444;
		font-weight: 400;
		line-height: 1;
	}
	
	.u-tab-item-active {
		position: relative;
		color: #000;
		font-size: 30rpx;
		font-weight: 600;
		background: #fff;
	}
	
	.u-tab-item-active::before {
		content: "";
		position: absolute;
		border-left: 4px solid $u-type-primary;
		height: 32rpx;
		left: 0;
		top: 39rpx;
	}

	.u-tab-view {
		height: 100%;
	}
	
	.right-box {
		background-color: rgb(250, 250, 250);
	}
	
	.page-view {
		padding: 16rpx;
	}
	
	.class-item {
		margin-bottom: 30rpx;
		background-color: #fff;
		padding: 16rpx;
		border-radius: 8rpx;

	}
	.item-title {
		font-size: 30rpx;
		color: $u-main-color;
		font-weight: bold;
		margin: 10rpx 0;
	}
	
	.item-menu-name {
		font-weight: normal;
		font-size: 24rpx;
		color: $u-main-color;
	}
	
	.item-container {
		display: flex;
		flex-wrap: wrap;
	}
	
	.thumb-box {
		width: 33.333333%;
		display: flex;
		align-items: center;
		justify-content: center;
		flex-direction: column;
		margin-top: 20rpx;
		margin-bottom: 10rpx;
		justify-content: space-between;
	}
	
	.item-menu-image {
		width: 100rpx;
		height: 100rpx;
		border-radius: 50%;
	}
</style>
